 # Geometry

## Geometry = Math of Euclid. Geometry is the Branch of math known for shapes (polygons), 3D figures, undefined terms, theorems, axioms, explanation of the universe, and pi.

###### 234,749 Questions
School Subjects
Math and Arithmetic
Geometry

# How many edges does a rectangular prism have?

A rectangular prism (a cuboid) has 12 edges (also 6 faces and 8 vertices).
A rectangular prism has 12 edges 12 12 edges A rectangular prism has eight (8) edges.

It's a 688!

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Geometry
School Subjects
Math and Arithmetic

# How many faces edges and vertices does a rectangular prism have?

Faces: 6

Vertices [or corners]: 8

Edges: 12
eight.

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Math and Arithmetic
Geometry

# Why did the obtuse angle go to the beach?

Because it was over 90 degress! C: get it??

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Geometry

# How many triangles in a pentagram?

The pentagram includes ten isosceles triangles: five acute and five obtuse. 001
Math and Arithmetic
Algebra
Geometry

# How many faces vertices and edges does a cube have?

A cube has 6 faces,

8 vertices,

12 edges.

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Miscellaneous
Geometry

# If you double the diameter of a circle what happens to the area?

It becomes 4 times as large. Here is a simple example:

A = πr2

For diameter 2, A = π

For diameter 4, A = 22 * π = 4π.

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Math and Arithmetic
Geometry

# How much fall in a 2 degree roof over 1 meter?

There are 34.9 mm of fall.

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Math and Arithmetic
Geometry

# What is the width of a house in meters?

No it can't, and I'm amazed how many enquirers seem not to realise that.

However, I suspect this enquirer really wanted to know how to convert the dimension from feet to metres. (That is the right spelling - it's a French invention and word.)

If so, 1 metre = 3.280 feet or 1 foot = 0.305 metre.

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Geometry
Math and Arithmetic
Algebra

# What instrument measures angles?

A protractor, compass, speed square, goniometer, theodolites, sextant, or angle finder can be used to measure angles.

A protractor is a circular or semi circular instrument for measuring angles and some have existed from ancient times. A half circular protractor is marked for 180 degrees and a full circle for 360 degrees. Protractors usually have two sets of numbers going in opposite directions, so be careful which side you use. When in doubt you should ask yourself is the angle greater or smaller that 90 degrees.

An inclinometer measures the slope (aka grade or "incline") on mountain roads and trails.

Practice lining up and reading a protractor while you measure a set of angles in this fun learning activity. The angles may range from 0Â° to 180Â°. The interactive protractor is already lined up with the vertex of each angle but you will have to rotate the protractor into proper position. The margin of error is only 1Â° and you must report measurement to the nearest whole number.

A protractor measures angles whereas a compass draws angles.

The typical protractor is 180 degrees. Protractors can also be circular and measure up to a full 360 degrees. Other methods of measuring angles include using a compass, and length measuring devices (rulers, tape measures, etc.) combined with trigonometry. Estimated angle measures can also use "devices." For example, the corner of a page can tell you if an angle is greater than or less than 90 degrees.

Navigators in the old days would use a sextant for measuring angles. In more recent times they used a transit. A quadrant is yet another tool for measuring the angle between the horizon and heavenly bodies, also useful for navigation.
A protractor can be used to measure an angle.

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Miscellaneous
Geometry

# How big is 36x24?

36x24 what value? inches, feet, yards, miles,metres,centimetres, millimetres? It's impossible to answer in that context.

If you only mean 36x24 as a multiplication problem, then it equals 864.

If you want to simplify 36x24 ( like a ratio, I guess), then it becomes 18x12, 9x6, and 3x2.

* * * * *

I disagree with the last sentence because a ratio is denoted by ":" or "/", not "x".

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Jobs & Education
Math and Arithmetic
Algebra
Geometry

# How do you find the radius if you have the circumference?

Circumference divided by pi to find the diameter then divide that by 2 to give you answer!!

Formula: R=c/pi/2

eg.

circumference =60 so,

60 divided by pi = 19.098, then

divide 19.098 by 2 to give you

9.549!!

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Geometry

# What attribute must be present for a quadrilateral to also be a trapezoid?

It must have only one set of parallel lines. 001
Math and Arithmetic
Geometry

# Is a triangle supplementary or complementary?

Supplementary: two or more angles equal 180 degrees.

Complementary: two or more angles equal 90 degrees.

All three angles of a triangle will always add up to 180 degrees, therefore it is supplementary.

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Mathematical Finance
Math and Arithmetic
Geometry

# What is a shape called that has 10 sides?

A ten-sided polygon is known as a decagon.

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Math and Arithmetic
Algebra
Geometry

# What is a triangle ruler called?

In the world of Drafting and Architecture, it is called a Scale.

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Math and Arithmetic
Algebra
Geometry

# If two segments are parallel are the lines containing them are coplanar?

Yes. Parallel Lines are also two coplanar lines that do not intersect.

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Math and Arithmetic
Geometry

# Which is greater 300mm or 3 cm?

300 mm is equal to 30 cm, so 300 mm would be greater.

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Math and Arithmetic
Geometry
Math History

# What is a six sided polygon called?

It is called a Hexagon. [Hecks-uh-gon]
A hexagon has 6 sides.
Hexagon
A hexagon.
Equal sides a hexagon
Hexagon
hexagon
hexagon
hexagon
A hexagon has a total of six sides. It also has a total of six internal angles.

A six sideded polygon is a hexagon.
A six sided polygon is an hexagon

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Geometry

# What is the name for a three-sided polygon?

A three sided polygon is called a triangle or a triagon It comes in three types -

1. the Equilateral triangle - all sides of equal length
2. the Isosceles triangle - two sides of equal length
3. the Scalene triangle - all sides of different length
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Algebra
Geometry
Mathematicians

Pythagoras.

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Stars
Geometry

# How many sides does a star have?

A star does not have a fixed number of sides as a triangle or quadrilateral does. A star may have five points, six points, or ten points. The number of sides is twice the number of points, so a six-pointed star has 12 sides.

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Geometry

# What are some non examples of density in real life?

Thought is a non-example of density (unless you happen to be thinking about density!) Any abstract concept should fit the bill.

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Math and Arithmetic
Algebra
Geometry

# HOW MANY 6 IN 48?

the are 8 sixes in the number 48

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